ONEdata Wave I and Wave III  codebooks are available in PDF form. The codebooks contain the variable names and frequency distributions. Click here to access the following ONEdata codebooks on the Add Health website.

Wave I

Wave I Climate Data Codebook
Wave I Street Connectivity Files Codebook
Wave I Crime Data Codebook
Wave I Geocode Source Codebook
Wave I Land Cover Data Codebook
Wave I Parks Data Codebook
Wave I 1990 Population Density Codebook
Wave I Resources Codebook
Wave I School Distance Measures Codebook
Wave I Urban Distances Codebook
Wave I Weather Data Codebook
Wave I ACCRA Data Codebook
Wave I Employment Data Codebook
Wave I Length of Day Codebook
Wave I Road Type Length Codebook
Wave I Rural-Urban Commuting Area Codebook

Wave III

Wave III Climate Data Codebook
Wave III Street Connectivity Files Codebook
Wave III Crime Data Codebook
Wave III Geocode Source Codebook
Wave III Land Cover Data Codebook
Wave III Mobility Data Codebook
Wave III MSA Dataset Codebook
Wave III Parks Data Codebook
Wave III 2000 Population Density Codebook
Wave III Resources Codebook
Wave III Urban Distances Codebook
Wave III Weather Data Codebook
Wave III ACCRA Data Codebook
Wave III Employment Data Codebook
Wave III Length of Day Codebook
Wave III Road Type Length Codebook
Wave III Rural-Urban Commuting Area Codebook